Wiring system for telephone-exchanges.



F. R. MCBERTY.

WIRING SYSTEM FOB. ,TELEPHONE EXCHANGES.

APPLICATION FILED JULY24,'1909 LLNEWED MM 11, 1814.

Patented July 21, '1914,

XXXXXXX 4 mmmmm C Munnnnhfu 5 d @DUDEDUD Inventor: Frank R. MCBertg bg. l

Witnesses rows,

UNITED sfrA'rEs FRANK nncsnarxor NEW EocHnLLE, NEW YOEKQEssIGNoR'To ,WESTERN ELECTRIC COMPANY, or emesso, ILLINOIS, a CoRPoRArIoNoE ILLINoIs, ,v

*PATENT for-FICE# f 1,14,0G2. .Specification of Letters Patent.A Patented July 21, 191441? Application filed July 24, 1909, Serial No. 509,457. Renewed May 11, 1914. Serial No; 837,925. i

which the following is in full, clear, concise,

and exact description.

My invention `relates tothe wiring of selectors such as those used in automatic tele-4 phone exchange systems, and has for its obA ject to provide an improved arrangement of the conductors whereby less labor is involved in the wiring and a neater and less costly\ construction is secured than in systems heretofore' used.

.A well known type of selector for automatic telephone exchange systems is one in which brushes, forming either directly .or

through suitable lmechanism the terminalsv of a telephone line, are adapted to be moved about a vertical axis and to traverse curved j vided for moving the brushes, any telephone liuc of the system may' be connected to any other telephone line for telephonie communication.

Heretofore groups of selectors of the type referred to have been mounted in horizontal and the correspondingr terminals thereof have been connected in multiple by individual. wires running` substantially par.-

allcl to the planes of movement of thev brushes. The result of this method of wiring is that the individual wires form a confused and disorderly mass of conductors. Furthermore, the cost of wiring is high on account `of the necessity of handling each wire separately, and there -is great liabilityv of trouble due to broken connections inthe loosely strung wires and at the terminals to which the wires are soldered. On account of the curvature of the rows of terminals cables arenot easily adapted to the wiring of horizontal rows of this -type of selector.

. According to my. invention rows of sc lector switches each having terminals arranged in acylindrical bank are wired in multiple by cable conductors extending transversely tothe curvature of the cylindrical bank and thusitransversely to the creasing trailic by placing them and connecte,

planes of movement of the' movable termi?` nals or brushes. Preferably the cables 'h e,.55 between adjacent straight rows of' terminals.; r and the conductors' of these cables are prefi erably arrangedinribbon'form and folde between said rows ontheV the terminal framei i I also find it desirable in'practice topro'f S vide in alineme'nt with. 'and preferably `1 one end of each. row of selectors a connectingrack having terminals arranged in rowscor'-, I; responding' to those of la Lselector. I xtend'i the cable conductors to make connec'tionwith lf.

the terminals of the connect-ing rack',"tl1` e conductors ofeachcable being connectedto-(S corresponding terminals .of the succes si v'e':;w

rows on theconnectingrack justas they .arejgO at. the selectors. Ithen provide other cables; forming extensions of the telephone linesi? and connectthe conductors of each of thesep `cables with successive terminals. a row; on the connecting rack. A

It is often necessary in practiceto group, ttor one set of telephone lines more selectors@`l than can be conveniently placed in 'asin'gle row, and my invention is readily adaptable to the requirements ofsuch large *groups otllgo fselectors. I divide the selectors of 4a given., .5. group into several rows placed side by sidei, i and unite in multiple the corresponding,

Vterminals of the connecting racks for the several rows of selectors by means of thong; 'last mentioned cables.' I prefer to arrange 1 my selectors in vertical rows or tiers and the,I brushes are accordingly 'mounted to .move u.) about vertical axes. This' arrangement per- 'mits' the mounting and wiring ofthe rows ,90 'of selectors on vertical sections of 'a suitable' i; frame and such sectional units may Abe read.-l ily added from time to time to' an existing .telephoneexchange to take care of the iiiouterY surface"V tif;

.My "nventlon has special utility i' their wiringf of selectors in which "the terminalsl are readily formediato shape in the factor 1054x Mld there-'connettedin place -bysoldexging the proper terminals. v'The only wiring necessary lin the telephone exchange. is accomplishediby an orderly arrangement .of cables, the conductors of which represent lines of consecutive numbers. f f

It will be understood that the terminals of i selectors are ordinarily numbered successively along the lines ofgtravel of the brushes this being desirable for obvious reasons, 'and particularly in large `telephone exchanges where many subscribers have a plurality of '.lines 'to which.'consecutive numbers are assigned, and where the brushes of the selectors are adapted in traversing the terminals the terminals are numbered consecutively. alongjhorizontal rows, and the l1ne. connect-.

in successiontd pick out and make connectionwith the first non-busy line.'V The several conductors in each vertical cable of my system of cabling, therefore., will ordinarily` represent lines which do not have consecutive numbers, baton my connecting rack ing cables contain conductors" which as I have stated ticularly by reference'to'the accompanying connecting rack may represent'lines to which -drawing which 'shows diagrammatically and in isometric'view, an arrangement of appa--A ratus and wiring. embodying" my invention.

I consider it unnecessary vand therefore'do not show in thedrawing a complete tele` phone exchange system, because, such sys.

tems are well known-in the'art, butmerely represent the parts thereofv to which my invention partifularly relates. p

In the drawing, a, b, c and d represent a group of selectors arranged in two vertical rows or tiers of two selectors each, a and b' constituting one tier and c and d another.

Connecting racks e and f, one for each tier,

are placed in vertical alineinent with the selectors. Each selector may comprise, `as I have shown, ten horizontal rows` of ten' consecutive numbers are fassigl'ied," and I have in the drawing numbered the terminals of each selector and connecting rack of the groupfrom 0 to 99, beginning at the top l row and at-the right and progressingto the left along successive rows.A

In each row of selectors the terminals/are wired by cables la running vertically, and,

therefore, atright angles to the planes of represent lines. of v'consecutive numbers I will describe my inventionmore par- VAmovement of the brushes `The conductors ofeach of these cables unite terminals of the successive rows of one of theseleotors with the corresponding terminals or the other'sej leotors and connecting rack in line therewith. These cables are represented in the drawing Aby 'groups of wires, and two cables for each -tier `of selectors are shown, it being .understood ,that fthere would be: as many such cables for each tier as there are terminals in a horizontal row on a selector. Each cable ranged side by side in a fiat ribbon, said ribbon being folded as shown to bring the indi.

vidual wires into proper position to be soldered direct to the selector terminals.

possible such direct connection of the wires It will be noted that the condrawinof are connected res ectiveir to those The system of cabling herein described'makes" is preferably constructed with its wires arto the terminals'without requiring fanning out wires.

ductorsof cable In, farthest te the left Vin termii'ialsvofselectors a and b' and oonnecting ,rack @which are numbered 9, 19, etc.,` to

-99,vv'hilecable k,'farthest tothe right, contains `conduetorswhich are connected respec- .tivelyto the terminals representing lines 0, 10etc., to 90 of selectors c andai and con-A necting rackA f. The corresponding terminals cf the connecting racks are united byv the conductors of cables Z, which preferably run-as I have shown them in a horizontal direction. The conductors of cach of these Vlast mentioned cables connect successive ter-'v 'minals 1n. a row on one of the connecting racks :with the corresponding terminals on the other rack. There may be. if desired as vmany such cables as rowsoi" terminals on a connecting rack and, vtlieiei`oi,-e,'ten in 'the arrangementshown in the drawing. It will be noted that cable- Z,.shown uppermost in the drawing, comprises conductors numbered consecutively 0 to 9, inclusive, which are connected respectively to correspondingly" numbered terminals of the connecting racks.

It-,is obvious that vmore than two selectors. may be placed in-each tier and the terminals thereof united by extending cables k, and that more than twol tiers of selectors may be grouped -togetherby extending cables Z vto the connecting rafcks of the additional tiers. Itl is also obvious that the selectors may .have any desired number of terminals i and that these may be in pairs or in triples, as. iscustomary in automatic telephone ei;-l

chauge systemsa., Any suitablevmeans may be 'employed for causing the brushes to move about the spindles and to connect them withthe desiredpterminals and any suitable mechanisinmay be employed for' extending the connections "from the brushes and from' 'theconductors of cables Z to the differentlines. I have in practice employed selectors having 200 sets of te'rnnna1s,- each set comprisingvtwo line terminals and one local'terminal, these terminals being arranged in ten horizontal curved rows, of twenty sets each. For such selectors I refer to employ ten sets of brushes, one or each row, moving abouta common spindle, although, if it i's desired, a single set of brushes may be employed and arranged to4 be moved vertically opposite the particular row and then horizontally to the terminals of theline desired.

Obviously my system of cabling may be employed in telephone exchange systems vary'- ingwi'dely in detail and in general'whereve selectors of the type-referred to are use Having thus described my inventiomwhat I claim 1s: f

1. A row of selectors each having terminals arranged in curved rowsand in intersecting straight rows, and brushes arranged to traverse said curved rows, in combination vwith a cablehaving conductors uniting terminals' of successive rows-on one selector with corresponding terminals on the other selectors said eablerunning at a right angle to ythe vplanes of movement of the brushesand between the -straight rows of terminals.

' 2; A selector having terminals in curved rows and. brushes arranged to traverse said 3Q rows, in combination with a connecting rack having rows' of terminals corresponding tosaidrows of the selector, a cable having conductors-uniting terminals of the suc"- ce'ssive rows on the selector with corresponding terminals on the connecting rack, said c a vle runningat a right angle to' the planes of movement of said brushes, and a .second cable, havin conductors connected to successive termmals of-a row on the connecting 4orack. l

. '3. A selector having terminals arranged 'in curved rows and straight rows oat right angles to said curved rows and brushes adapted to traverse said curved rows, in

.45 combination with al connecting rack having terminals arranged in rows corresponding to those of the selector, a'plurality of cables, the conductors of eachyo'f which unite successive terminals in a straight row onthe selector with the corresponding terminals on 4the connecting rack, said cables running in the direction of said straight rows ot' 'terminals,.' and a plurality of other cables, the conductors of each of which are connected to successive terminals of a Arow on the connecting rack corresponding to a I curved rowon the selector.- v

4. A row of selectors, each having terminais arranged to form curved rows and straight rows at right angles .to said curved rows,`.and brushes adapted to traversesaid curved rows, incombination withl a conn'ecting rack in line with the row of selectors having terminals arranged rows corre- 'G spending to those of a selector, a plurality of. cables, the conductors of each of which unite successive terminals in a straight row on one of the selectors with the corresponding terminalson the other selectors and connecting rack, said cables running lin the direction of said straight rows of terminals, and a plurality of other cables`v the 4conductors of each of which are connected to successive terminals in a rowon the'connecting rack corresponding to curved rows on the ranged to unite corresponding terminals of the connecting racks. G. A plurality of rowsof selectors, each selector having terminals arranged to form curved rows and straight rows at. right angles to said .curved rows, and brushes adapted to traverse said curved rows, said rows of selectors extending at right angles to the planes of movement of the brushes, in combination with a. plurality of connecting racks one in line with each row of selectors and having terminals in rows corresponding to those of a selector, a plurality of cables,

'cach having conductors uniting successive terminals in a straight row of one selector with the corresponding terminals of the 10,5 other selectors' and connecting rack in line therewith, and a plurality of other cables, each of which has conductors uniting successive terminals in rows on the connecting racks corresponding to the curved rows on the selectors. y

7. A group of selectors arranged in vertical tiers, each selector having horizontal rows of terminals and brushes adapted-to traverse said rows. in combination with con- 115 necting racks one in line with each tier and having rows of terminals corresponding to thoseof aselector, a plurality of vertically vrunning cables, each cable having con- .ductors uniting termmals 1n successive 120 rows-otone selector with the corresponding terminals of the other selectors and connecting rack iu line therewith, and a plurality of other cables each having conductors uniting successive terminals in corresponding rows of the connecting racls.- 8. A'group of selectors, each havixg hori- -zontal rows of terminals, and brushes adapted to traverse said rows, said selectors being .a-rranged kin vertical tiers, in combination lee with COnneCting'ra-CkS, one in line with each tier'and having horizontal rows of terminals corresponding to those `oif av selector, 'a plurality .of flat formed cables, each having conductors uniting terminals in successive rows of one selector with the corresponding terminals of the other selectors and connecting rack in linetherewith, and a pluralityl of other cables, each having conductors unit# 'ing successive terminals in corresponding rows on the connecting racks. A

9. A group of selectors, each having terminals arrangedl in curved rows about a. cy-

curved rows.

conductors arranged to unite 'corresponding terminals or" the connecting racks; Y y

10. A group of' selectors, each having terminals arranged 11i curved rows about a cylindrical frame, and brushes adapted to rotate about vertical axes valong said curved rows, said selectors being arranged in'fvertical tiers, in` combina-tion' with connecting racks, one in line with each tier of selectors and having terminals arranged in rows corresponding to those of a selector, a plurality of vertically ruiming cables, each cable having conductors uniting terminals in vsuccessiveV rows of one selector with the corresponding terminals of the other selectors and connecting rack in line therewith, and a plurality of other cables, each having conductors uniting successive terminalsfin corresponding rows of the connecting racks.

11. A 'selector having terminals arranged in curved A rows and intersecting straight rows, in combination with cables, one for each. straight row of terminals, the conductors of each of said cables being connected respectively to successive terminals in one' ot said straight rows, andl other cables, theconductors of eachof which are connected respectivelyto those conductors of the several first mentioned cables which are connected tosuccessive terminals in one of said 12; A selector having. terminals .arranged in curved rows and intersecting straight rows, in combination with ribbon cables, one for each straight row of terminals, the conductors of eachof said cables lying parallel to one another and beingconnected,respectively to successive terminals in one of said straight rows, and "other cables, the conductors of'each of which areconnected respectively to those conductors of the said ribbon' cables which are connected to successive terminals inone of said curved rows.

13. A. row of selectors each'yliaving terminals arranged .in curved rows and intersecting straightrows, in combination with flat ribbon cables, the conductorsof each of said cables being' connected respectively to corresponding terminals in said straight rows and other cables, the conductors of each of which are connected respectively to those conductors of said flat ribbon cables which are connected to successive terminals in said curved rows.

14. A row of selectors eachlliaving terminals arranged in cui-ved rows and intersecting straight rows,iin combination ,with dat ribbon cables, each of said cables being folded along diagonal lines and having its conductors respectively connected at alternate folds to corresponding terminals in said 'straight rows, and other cables, the conductors of each et' which are connected respectively to those conductors in said at ribbon cables which are connected respectively to successive terminals in said curved rows.

15. A selector having terminals arranged in curved rows and straight rows at right angles to said curved rows and brushes adapted to traverse said terminals, in combination with cables, one foreach straight row of terminals and running in the direc'- tion. of said straight rows, the conductors ot ea`ch of saidcables being connected respectively to successive terminals in a str: ightrow onv the selector, and other cables, the conductors of eacyh of which are connected respectively to those conductors of the iii-st mentioned cables which are con- .'nected respectively to successive terminals in a curved row on the selector.

1G. T he combination withy a group of 'cables coi'ltaining wires of consecutivelynumbered lines, of a connecting rack having terminals to which said wires are connected, a group of selectors having terminals for said lines, and cables connecting said selector terminals 'to lsaid connecting rack terminals, each of said lastmentioned cables containing wires which are connected at said rack to wires of d i'erent cables of the first inentioned group.

i7. In a. switch, the combination with a plurality of selectors arranged in a row, each selector having terminals arranged in curved rows and intersecting straight rows, of means or `electrically connecting the corresponding terminals of said selectors -in multiple, consisting of a series of calole con` ductors vextending parallel to and Ibetween said straight rows.

18. In a switch, the combination with a each selector having termina License a cylindrical banlr and forming curved and straight rows, of means for electrically connecting the corresponding terminals of the selectors in multiple, consisting of a series of conductorsv placed between and running parallel to the straight rows of terminals.

19. ln a switch, the combination with a plurality of selectors arranged in a row, each selectors having terminals arranged in a cylindrical frame, said terminals extending radially from the outer surface of said frame and forming curved and straight rows, of means for electrically connecting the cor responding terminals of said selectors in multiple, consisting of a' series of conductors placed between and running parallel to adjacent straight rows of terminals on the outer surface of said frame.

20. In a switch, the combination with a plurality ot' selectors arranged in a row, each selector having terminals arranged in a cylindrical bank and forming curved and straight rows, of means for electrically connecting the corresponding terminals of said selectors i'n multiple, consisting of a series of cable conductors arranged in ribbon form and folded betweenadjacent straight rows,

of terminals.

2l. In a multiple cabling system, the coinbinzucionl with groups of closely spaced tesininals arranged in rovs, of acable connect` ing terminals of said groups lin multiple i'elation, said cable consisting of a ribbon `or band ot wires lying between adjacent rows of terminals.

22. `The combination with a row of tei;-

minals having a certain spacing, of a flat cable comprising a la'yer ot' wires, having a closer spacing than the terminals, said wires being directly connected with the terminals, by having the cable disposed at such an angle with respect to the row of terminals as to cause each wire of the cable to directly intersect the corresponding terminal.

23. In a multiple cabling system, the oombination with groups of terminals arranged in closely spaced rows, 'of latI cables connecting corresponding rows in each group, said cables lying between the rows minals.

24. In a multiple cable system, the coinbi' nation with groups of terminals arranged in closely spaced rows, of Frat cables connecting corresponding rows in each group, said cables lying between the rows of terminals,

each cable being folded over the associated row in each group to canse the wires of the cable to overlie the ends of the terminals.

25. The combination with a group of terminals arranged in closely spaced rows, of

fiat cables lying within the spaeesbetween adjacent rows of terminals and having their wires brought cnt to the edges of the spaces for connection with the ends 0f said terminals.

In witness whereof,

my naine this 22nd day of July, A. D` 1909.

FRi-XNK l.' MCBERTY,

lllitnesses EDGAR F. Brunnen, lavrNe lllAcDoNaLn.

all

of ter- Y.

, l hereunto subscribe 

